Exgavatob



Nov. 3, 1925.

- J. E. SCHULTZ EXCAVATOR 3 Sheets-Sheet J.

Original Filed Aug. 21,

:FJW a W z JZTA2&ZJZZZ 54am utoz r 1 anowu Nov. 3, 1925.

' J. E. SCHULTZ EXCAVATOR Oi-izinal Filed Au 21 3 Sheets-Sheet 5avwentoz Jlflzaliz anew/Mega Reissued Nov. 3, 1925. i Re, mutN rTEOSTATESP'A-TENT ounce.

unseen. 'sOnuL'r'z, or ALBANY, WISCONSIN, assmnoa or ONE-THIRD To anyWEBB ANDON-E-THIIRD 'ro COLONEL DIXON, BOTH or ALBANY, wrsconsm.

EXGAVATOR.

Original No. 1,537,558, dated May 12, 1925, Serial no. rsa,4oa', filedAugust 21', 1924. Application for reissue filed September 17, 1925.Serial No. 57,012.

T all whom it may concern: proceeds, the invention" resides in the com-Be it known that LJussE E. SCHULTZ, a bination and arrangement of partsand in citizen of theUnited States, residing at Althe details ofconstruction hereinafter debany, in the countyof Green and State ofscribed and claimed, it being'i'inder'stood \Visconsin, have invented anew and useful that changes in the precise embodiment of Excavator, ofwhich the following is a the invention herein disclosed may be made 60specification.

withinthe scope of what is claimed'without This invention relates toexcavators of departing from the spirit of the invention. that typeutilizing a scoop adaptedto be In the accom anying drawings the predrawnover the surface of the ground so as ferred form 0 the invention hasbeen to dig thereinto and gather a scoop or shown. bucket full of loosesoil which can after- In said drawings, wards be conveyedto and dumpedat any Eigur'e' l is-a plan view of the machine. desired point. Figure 2is a side elevation thereof, the One of the objects of the invention isto scoop or bucket being shown in engagement provide a scoop which iswheel supported With the soil. H 7 and can be minutely adjusted'so as tovary Figure 3 is a section on line 33, Figthe depth ofthe cut thereby,rendering the ure structure especially useful in road construc- Figure 4is a view similar to Figure 3 1 ti 1 showing the scoop or bucketraisedfrom the Another object is to provide simple and ground. v v 75efficient means whereby the scoop or bucket Figure 5 is a similar viewshowing the can be quickly raised or lowered relative to bucket tiltedafter being raised.v M the surface of the ground, additional meansFigure 6 is a section on line 6--6 Figure 2. I being employed forimparting a rotation to Figure 7 is a view partly in sect-ion an thescoop so that the'contents thereof will partly in elevation showing themechanism not fall therefrom while in transit. for operating one of thehucketcontrolling A further object is to provide a means Shafts. wherebya portion or all of the contents of Referring to the figures bycharacters of the bucket can be delivered therefrom in reference 1designates the frame of the macontrollable quantities while the bucketis chine, the front portion of this frame being in motion or while it isat rest. provided with a central forwardly extend- Another object is toprovide the scoop or ing tongue 2 adaptedto be hitched in any bucketwith a loading means whereby the suitable manner to a tractor. In thedraw- 85 material directed into said scoop will be ings, the hitch of atractor has been indidragged back thereinto and properly filled cated atH. The sides of the frame 1 are said loading means being operativelyconmounted,attheir rear ends, upon an axle 3 nected to the supportingwheels. and rotatable disks l are mounted at their Another object is toprovide a structure centers on the axle 3. Extending laterally 40 ofthis character designed primarily to be from these disks adjacent theirperipheries hitched to atractor so as to be drawn thereare spindles 5supported by wheels 6. These by, it being possible for the driver of thespindles are in alinement. The disks 4 are tractor to manipulate themechanism of the provided with grooved peripheries as indi excavator soas to raise, lower or tilt the cated at 7 and fastened in these groovesare 45 bucket. bands 8 the ends of which are connected to A stillfurther object is to provide a chains 9. These chains engage sprockets10 structure of this character which can be opsecured to the ends of atransverse shaft 11 erated cheaply, can be manipulated readily, which isjournaled in the sides of the frame and is capable of carrying themaximum 1 near the front ends thereof. Shaft 11 has 50 load per weightunit of the machine as coma .worm gear 12 near one end meshing withpared with other structures of this general a worm 13 secured to aforwardly extending type. shaft 14. A crank 15 or the like is providedWith the foregoing and other Objects in atthe front end of the shaft andby rotating view which will appear as the description the same, shaft 11can be rotated so as to axle 3 and abutting the frame 1 is a sleeve 17supported between 1. Th

latch 22 is adapted to position.

Secured to 23 concentric is atpartly chain 27. The other end of band 25tached to a spring 28 which extends around the disk and is attached asto the side of the scoop or bucket. band 26 is secured as at 30 to theside of the scoop or bucket.

he two chains 27 are mounted on sprockets 31 secured to the end of atransverse shaft 32. This shaft, like the shaft 11, has a worm gear 33adjacent one end meshing with a worm 34: carried by a forwardlyextending shaft This shaft has a crank 36 or other suitable meanswhereby it can be rotated readily, the said shaft, worm and gearoperating in the same manner as the ones illustrated in Figure 7.Obviously when the shaft 32 is rotated in one direction the chains willpull through the bands 25 upon the springs 28 and while at the same timethe bands 26 will be paid out. will result in the bucket or scoop beingswung downwardly at its forward end and the digging edge thereof can beforced against the surface of the soil with any desired degree ofpressure. By providing the springs the bucket can be deflected upwardlyat its forward edge should it come into contact with an unyieldingobstruction but the springs will promptly restore it to its normalposition after the obstruction has been passed. By rotating shaft 32 inthe opposite direction the bands 26 will pull on the bucket so as toelevate the advancing edge and thus bring the bucket either to theposition shown in Figure 4 or to the position shown in Figure 5, or toany intermediate POEZiTZODS.

projects through the sides e top and front J ournaled in scoop or bucketend of mounted on this shaft are sprock whereby motion is sprocket 45from a the axle rotates meshes thereby chains 41. These an endless 3 andadapted to rotate. with this sprocket and with an internal gear 49couple it from shaft 37.

scrapers 4L3 plained. motion opened s before d t b At the be set inmotion.

will engage the gathered in the scoop or it backwardly into t and thecontents of th bucket will thus gravitate onto t rame,

is claimed is: I e comblnatlon with an endless loading devic journaledin the the frame and the upper portion of the is a trans ets 4Osupchains are chain 46 transmitted to said with one of the wheels 6,this the sprocket 45 be grasped and opgmning of onsequently the loosematerial bucket and he bucket.

increases in size the loader will it has reached a predeterdumping thegate 20 can be e scoop or he ground.

within the e mounted to pile material for swinging movement within thescoop, and means for actuating the loading device within the scoop.

2. The combination with a wheel supported structure and a scoop movablymounted therein and carried thereby, of an endless loading devicemounted for swinging movement within the scoop, and means operated bythe movement of said structure for actuating the loading device to pilematerial within the scoop.

3. The combination with a wheel supported structure and a scoopsupported thereby, said scoop being tiltably mounted, of an endlessloading device mounted to swing within the scoop, and means foractuating theload'ing evice to direct gathered material rearwardlywithin the scoop therein, said loading device constituting means forbearing downwardly on the pile to pi ess it rearwar ly.

4. The combination with supporting wheels, an axle, and a frame mountedon the axle, of a scoop carried by the axle, an endless loading devicemounted for swinging movement within the scoop, and means operated bythe rotation of a sup-porting wheel for actuating the loading device topile material within the scoop. v

5. The combination wheels, and a scoop supported thereby, of yieldingmeans for tilting the scoop to raise and lower the front end thereof,said end being open, an endless loading device mounted to swing withinthe scoop, and means operated by one of the supporting wheels when thescoop is elevated to any position relative thereto for continuouslyactuating the loading device during the rotation of the wheel.

6. The combination with supporting wheels, and a scoop tiltably mountedtherebetween and having an open front end, of an endless loading devicemounted to swing within the scoop and normally inclined downwardly andforwardly toward the bottom of the open end thereof, and means operatedby one of the supporting wheels for continuously operating the loadingdevice to pile gathered material in the back portion of the scoop.

7. The combination with supporting wheels, a frame, and a scoop movablewith and tiltable within the frame, of yielding means for tilting thescoop to press the advancing edge thereof yieldingly against the surfaceof the ground, and for lifting the advancing edge of the scoop from theground, a downwardly and forwardly extending endless loading devicemounted to swing wit in the scoop, means operated by one of thesupporting wheels for actuating the loading device to direct gatheredmaterial rearwardly within the scoop to pile it therein, said loadingdevice constituting with supporting wheels,

means for bearing downwardly on the pile to press it i'e'arwardly, and agate normally closing the rear end of the scoop.

8. The combination with supporting disks eccentrically secured to thespindles thereof, and an axle connecting the centers of the disks, of atiltable scoop supported by the axle, mechanism for tilting the scooprelative to the axle, said mechanism including a yielding element, andmeans for rotating the disks relative to the spindles to raise and lowerthe axle. v

.9. The combination wheels, spindles bearing therein, disks fixedlyconnected to the spindle and eccentrically mounted thereon, and'an axleconnecting the centers of the disks, of means for rotating the disks toraise the axle relative to the spindles, a scoop tiltably mounted on theaxle, yielding means for rotating the scoop upon the axle, and formaintaining it normally in a predetermined position upon the axle.

10. The combination with wheels, an axle, and means for raising andlowering the axle relative to the wheels, of a frame mounted onthe axle,a tiltable scoop within the frame and supported by the axle, cooperatingmeans upon the frame with supporting and scoop for yieldingly tiltingsaid scoop about the axle and relative to the frame.

11. The combination with supporting wheels, an axle, a frame mounted onthe axle, and cooperating means upon the frame and axle for raising andlowering the axle relative to the wheels, of a scoop tiltably mounted onthe axle and within the frame, cooperating means upon the scoop andframe for yieldingly rotating the scoop upon the axle and within theframe, and a gate normally closing one end of the scoop for retainingthe contents thereof.

12. The combination with supporting wheels, an axle, a frame mounted onthe axle, and means for moving the axle ina circle relative to thewheels to raise and lower the axle, of a scoop carried by the axle, anendless loading device mounted for swinging movement within the scoop,and means operated by the rotation of a supporting wheel for actuatingthe loading device to pile material within the scoop.

13. The combination with supporting wheels, a scoop supported thereby,an means for raising and lowering the scoop, of yielding means fortilting the scoop to raise and lower the front end thereof, said endbeing open, an endless loading device mounted to swing within the scoop,and means operated by one of the supporting wheels when the scoop iselevated to any position relative thereto for continuously device duringthe rotaactuating the loading tion of the wheel.

mounted on and 0 wheels, a scoop tiltably mounted therebevlce, mountedto swlng within the 14. The combination with supporting wheels, a frame,and a scoop movable with wheels, a scoop supported therebetween and andtilt-able within the frame, of means for open at its front end and top,and means raising and lowering the scoop and frame or raising andlowering the scoop relative relative to the wheels, yielding means for 5to the wheels, of.yie1ding means for tilttilting the scoop to press theadvancing edge ingthe scoop and pressing the advancing thereofyieldingly against the surface of the edge of the bottom thereofyieldingly against ground, and for lifting the advancing edge theground. of the scoop from the ground, a downwardly 15. The combinationwith supporting and forwardly extending endless loading descoop,

tween and having an open front end, and means operated by one of thesupporting means for raising and lowering the scoop wheels for actuatingthe loading device to relative to the wheels, of an endless loadingdirect gathered material rearwardly within evice mounted to swing withinthe scoop the'scoop to pile it'therein, said loading de- 15 and normallyinclined downwardly and forvice constituting means for bearing downn endwardly on the pile to press it rearwardly, thereof, and means operatedby one of the and a gate normally closing the rear end of supportingwheels when the scoop is at any the scoop. desired elevation. forcontinuously operating In testimony that Iclaim the foregoing as theloading device to pile gathered material my own I hereto affiX mysignature.

in the back portion of the scoop.

16. The combination with supporting JESSE E. SCHULTZ.

